Reconfigurable Intelligent Surfaces for Advanced Wireless Networks and Wave Computing

This paper presents cutting-edge Reconfigurable Intelligent Surface (RIS) designs developed for controlling the wireless propagation environment. Through theoretical analysis, extensive simulations and accurate fabrication, we have evaluated the performance of reflective, transmissive, and Simultaneous Transmissive and Reflective (STAR) surfaces in key wireless communication environments. The findings of each configuration offer unique advantages in signal characteristics according to each deployment context. This work not only underscores the versatility of RIS technology but also delivers beneficial insights into deciding the proper RIS configuration based on application requirements.